Sexual health and function are important for a healthy life. The male reproductive system is responsible for the production, maintenance and transportation of sperms and semen, the discharge of sperm during sex, and for the production and secretion of male sex hormones. Male reproductive health depends on male hormones. The primary hormones involved are testosterone, follicle-stimulating hormone and luteinizing hormone. Testosterone is important for the development of male characteristics, such as muscle mass and strength, facial hair growth, sex drive, fat distribution, bone mass, etc. Follicle-stimulating hormone is involved in spermatogenesis, while luteinizing hormone stimulates testosterone production. The field of andrology deals with the anomalies and disorders of the male genitalia, and encompasses the diagnosis and treatment of these conditions. The objective of this book is to give a general view of the different areas of clinical andrology. It aims to shed light on some of the unexplored aspects of male reproductive health and the recent researches in this domain. The extensive content of this book provides the readers with a thorough understanding of the subject.